Vise.



J5A f E. FISHER.

VISE.

APPLIOATION FILED s221224, 190e.

i Patented Allg. 8, 1911.

3 sHnETsLsHnBT 1.

4 Z6 12- I 17 r| j 15- 15 2a 22 ilu;-

Patented Alg. 8,*1911.

3 SHEETS-SHEET 2.

' E. FISHER.

VISB.

APPLICATION FILED SEPT. 24, 1909.

@fuif/Waimes EBENEZER FISHER, OF EGG HARBOR CITY, NEW JERSEY.

VISE.

Specification of Letters Patent.

Patented Aug. 8, 1911.

Application led September 24:, 1909. Serial No. 519,395.

To all whom it may concern:

Be it known that I, Ennnnznn FISHER, a subject of the King of GreatBritain, residing at Egg Harbor City, in the county of Atlantic andState of New Jersey, have invented certain new and useful Improvementsin Vises, of which the following is a specification.

This invention relates to improvements in vises and other clampingdevices in which a sliding jaw is employed. Heretofore, in devices ofthis character the movable jaw is generally actuated and held bypressure applied thereto in a direction which, while advancing the same,fails to apply at all times a seating pressure of the movable jaw uponits base, with the result that such movement of the jaw takes placeunder the clamping strain as to throw the clamping face of the movablejaw out of parallelism with the clamping face of its opposing jaw,thereby causing the clamping action to be present upon a part only ofthe clamping surface of the jaws and the work held therebetween with theconsequent effect of insecure clamping of the work or the mutilationthereof from the necessity of undue clamping strain.

Therefore, the principal object of the present invention is to provide asimple construction of clamping device in which the movable jaw membermay be quickly positioned upon its base and be actuated for clamping bythe application of a pressure applied at a downward inclination thereonso that while advancing the movable jaw member it will force the same atall times to its base and thereby maintain the parallelism of theclamping faces of the aws and also render ineffective looseness or wearof the parts, which is the chief defect of wrenches generally.

The invention consists in so combiningthe movable jaw member of aclamping device with its base and its actuating means that the pressureof the actuating' means upon the movable jaw member will be on adownward inclination at all times; and the invention further consists inproviding` adjustable locking means by which the actuating means issecured to the base of the clamping device and which under the strain ofthe actuating device in applying pressure to the movable jaw on adownward inclination will the more firmly bind the actuating device tothe base and without caus# ing the actuating device to have any movementaway from the base, thus providing against any movement of the actuatingmeans that will be in opposition to its application of pressure upon themovable jaw at a downward inclination.

The invention also consists of certain other novel features in thearrangement and construction of parts, all as hereinafter de.

scribed and specifically set forth in the appended claims.

In the accompanying drawings illustrating my invention, Figure 1, is aview in side elevation of a vise constructed in accordance with theinvention, Fig. 2, is a vertical longitudinal section taken centrally ofFig. l, Fig. 3, is a top View, Fig. 4f, is an end View, Fig. 5, is adetail, showing in perspective the ratchet block with the actuatingscrew, Fig. 6, is a perspective view showing a portion of the bed of thevise with its movable jaw thereon, Fig. 7, is a detail showing the teethof the ratchet bar and ratchet block in their closest engagement, Fig.8, is a detail showing the position of the ratchet teeth in theirinitial engagement.

Referring to the drawings, l designates the base or bed portion of thedevice having a fixed aw 2 at one end. The bed portion is preferablyformed of two integral parts l and 1b having a slot 3 formed betweenthem, into which slot is secured a rack-bar 4L so as to be spaced apartfrom the two parts of the bed portion, and this rack-bar is held bymeans of the tapering bolts 5 and 5, which also serve to bind the twoportions of the bed together.

6 designates the movable 'jaw slidably mounted upon the bed, and ispreferably formed with the two foot extensions 6a and 6b extending oneach side of the slot 3 for the purpose of securing a rmer seating ofthe jaw on the bed while under strain.

The means for actuating the movable jaw member consists of the screw 7operating in the threaded bore 8 in the locking ratchet block 9. Thisactuating screw is arranged to lie at all times in the slanted positionshown, so that its forward end face 7 a when brought into contact withthe movable jaw, will be against the bearing face 6 of said jaw whichface is at right angles to the axis of the screw 7 By this arrangementof actuating screw and bearing faces the pressure applied to the jaw 6is in a forward and downward direction which while advancing the jawholds it to its bed. This principle of action presupposes that duringlthe application of pressure the screw 7 will not be movable away fromthe bed as any such movement, tilting or otherwise,` at the point ofpressure during the application of pressure will defeat this principleof operation. It has therefore been provided that the pressure inclamping` will in its backward push upon the rack bolt 9 force the sameat all times firmly downward upon the rack-bar, and firmly clamp therackblock and rack-bar together. This is accomplished by forming theresisting walls of the teeth of the engaging racks on an incline so thatby their overhang one upon the other they will interlock and at the sametime draw together under the clamping strain, as more fully illustratedin Figs. 7 and 8, which show in detail the loose position of theengaging' racks, and the position when under pressure.

The ratchet block 9 is preferably channeled from its underside toreceive and hold the rack bar 10, the same being secured therein bybolts 11, and this rack-bar is seated sufficiently within the channel topermit the ratchet bloclr to straddle the rack bar 4, thus maintainingthe said block with its actuating' screw in operating position thereonat all times and permitting the ready placing of the block at any partupon the rack 4.

The base or body of the device is provided at its fixed jaw with adownward cylindrical extension 12 which forms a pivottherefor and whichis seated wit-hin a hollow cylindrical support 13 having aV base 14- forthe firm attachment thereof to a work bench or other suitable fixedsupport. For the purpose of effectively and quickly binding the bed ofthe device at any position at any angle to which it may be turned, t-hehollow support member 13 is provided with a boss 15 in which andextending through the wall of the supporting' member is a bore 16 formedon a downward inclination and partly threaded to receive a binding screw17. The pivot member 12 .is provided with an annular groove 18 toregister with the opening of the bore 16 and presents a beveled facethat is at right angles with the axis of said bore and receives inbearing' contact therewith either the set screw 17 or preferably asshown a small cylindrical bearing block of hard fiber or other suitablematerial which will lie partly in the said annular groove and partly insaid bore and be operated upon by the screw to bind the parts in fixedrelation. It will be understood that by reason of the application of abinding pressure downward as well as inward the pivotal member 12 is notonly acted upon but that portion of the base or bed of the deviceresting on the top of the cylindrical support 13 will be also forceddown into binding' contact therewith.

The cylindrical support 13 is provided with an annular bevel 1.9 at itsbase for the purpose of providing a bearing for a strut 2O which extendsdownward from the overhanging portion of the bed of the device where itis cletachably held against a shoulder or fheel 21 by the set screws QQ.At the lower end the strut 2O is formed to fit the curve of the annular1bevel 19 and while giving support to the outer end of the bed of thedevice also causes binding to take place as the result of any strainapplied downward upon said bed to bring about an automatic binding oft-he device upon its support, which will prevent accidental rotation.

I am aware that it is not new to arrange the actuating screw of aclamping' device upon an incline nor to cause the adjustable means forsupporting the actuating screw to lock upon the base of the clampingdevice under the pressure of the said screw. The present invention whileinvolving said features provides a construction that prevents anyraising or tilting of the actuating screw support and for this purposemakes provision for a slight lowering movement thereof, so that thedirection of the line of force of the pressure upon the movable jaw willbe always forward and downward thereon, as any interruption of thisaction, as by a temporary lifting of the actuating screw would beunproductive of the ends attained by the invention.

Having thus fully described my invention, what I claim and desire tosecure by Letters Patent, is:

1. In a clamping device, t-he combination with a bed member carrying ajaw and a ratchet face, of a cooperating jaw slidably mounted on saidbed member and free of operative engagement with the teeth of saidratchet face, a support adapted to engage the teeth of said ratchet faceand to interlock therewith under rearward pressure on said support, andan actuating screw operatively mounted in said support on a downwardinclination and adapted to apply pressure upon said sliding aw in thedirection of said inclination, substantially as described.

2. In a clamping device, t-he combination with a bed member carrying ajaw and provided with ratchet teeth having retreating inclined retainingwalls, of a coperating jaw mounted to slide on said bed member withoutengagement with said ratchet teeth, means for actuating said jaw,adapted to apply its actuating pressure on a downward inclination, and alocking support for said actuating means, adjustable on said bed memberand provided with ratchet. teeth for cooperating' with said bed ratchetand having the retaining walls thereof similarly inclined, whereby theactuating means in forcing the support backward will exert a downwardpressure on said support, substantially as described.

3. In a clamping device, the combination with a bed member carrying ajaw, and having a longitudinal slot formed therein, a

ratchet bar secured within said slot and in spaced relation t0 the wallsthereof, a sliding jaw mounted on said bed, a ratchet member forengagement with said ratchet bar adapted to extend into said slot uponeach side of said bar, and an actuating screw arranged upon a downwardincline with relation to the sliding jaw, whereby to apply pressurethereto in the direction of the said inclination, substantially asdescribed.

In testimony whereof I afiix my signature in the presence of twowitnesses.

EBENEZER FISHER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

